114 lines
4.5 KiB
C
114 lines
4.5 KiB
C
/*
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** OSSP ui64 - 64-Bit Arithmetic
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** Copyright (c) 2002-2005 Ralf S. Engelschall <rse@engelschall.com>
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** Copyright (c) 2002-2005 The OSSP Project <http://www.ossp.org/>
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**
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** This file is part of OSSP ui64, a 64-bit arithmetic library
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** which can be found at http://www.ossp.org/pkg/lib/ui64/.
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**
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** Permission to use, copy, modify, and distribute this software for
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** any purpose with or without fee is hereby granted, provided that
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** the above copyright notice and this permission notice appear in all
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** copies.
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**
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** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
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** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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** SUCH DAMAGE.
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**
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** ui64.h: API declaration
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*/
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#ifndef __UI64_H__
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#define __UI64_H__
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#include <string.h>
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#define UI64_PREFIX uuid_
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/* embedding support */
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#ifdef UI64_PREFIX
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#if defined(__STDC__) || defined(__cplusplus)
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#define __UI64_CONCAT(x,y) x ## y
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#define UI64_CONCAT(x,y) __UI64_CONCAT(x,y)
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#else
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#define __UI64_CONCAT(x) x
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#define UI64_CONCAT(x,y) __UI64_CONCAT(x)y
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#endif
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#define ui64_t UI64_CONCAT(UI64_PREFIX,ui64_t)
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#define ui64_zero UI64_CONCAT(UI64_PREFIX,ui64_zero)
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#define ui64_max UI64_CONCAT(UI64_PREFIX,ui64_max)
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#define ui64_n2i UI64_CONCAT(UI64_PREFIX,ui64_n2i)
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#define ui64_i2n UI64_CONCAT(UI64_PREFIX,ui64_i2n)
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#define ui64_s2i UI64_CONCAT(UI64_PREFIX,ui64_s2i)
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#define ui64_i2s UI64_CONCAT(UI64_PREFIX,ui64_i2s)
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#define ui64_add UI64_CONCAT(UI64_PREFIX,ui64_add)
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#define ui64_addn UI64_CONCAT(UI64_PREFIX,ui64_addn)
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#define ui64_sub UI64_CONCAT(UI64_PREFIX,ui64_sub)
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#define ui64_subn UI64_CONCAT(UI64_PREFIX,ui64_subn)
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#define ui64_mul UI64_CONCAT(UI64_PREFIX,ui64_mul)
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#define ui64_muln UI64_CONCAT(UI64_PREFIX,ui64_muln)
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#define ui64_div UI64_CONCAT(UI64_PREFIX,ui64_div)
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#define ui64_divn UI64_CONCAT(UI64_PREFIX,ui64_divn)
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#define ui64_and UI64_CONCAT(UI64_PREFIX,ui64_and)
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#define ui64_or UI64_CONCAT(UI64_PREFIX,ui64_or)
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#define ui64_xor UI64_CONCAT(UI64_PREFIX,ui64_xor)
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#define ui64_not UI64_CONCAT(UI64_PREFIX,ui64_not)
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#define ui64_rol UI64_CONCAT(UI64_PREFIX,ui64_rol)
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#define ui64_ror UI64_CONCAT(UI64_PREFIX,ui64_ror)
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#define ui64_len UI64_CONCAT(UI64_PREFIX,ui64_len)
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#define ui64_cmp UI64_CONCAT(UI64_PREFIX,ui64_cmp)
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#endif
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typedef struct {
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unsigned char x[8]; /* x_0, ..., x_7 */
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} ui64_t;
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#define ui64_cons(x7,x6,x5,x4,x3,x2,x1,x0) \
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{ { 0x##x0, 0x##x1, 0x##x2, 0x##x3, 0x##x4, 0x##x5, 0x##x6, 0x##x7 } }
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/* particular values */
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extern ui64_t ui64_zero (void);
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extern ui64_t ui64_max (void);
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/* import and export via ISO-C "unsigned long" */
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extern ui64_t ui64_n2i (unsigned long n);
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extern unsigned long ui64_i2n (ui64_t x);
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/* import and export via ISO-C string of arbitrary base */
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extern ui64_t ui64_s2i (const char *str, char **end, int base);
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extern char * ui64_i2s (ui64_t x, char *str, size_t len, int base);
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/* arithmetical operations */
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extern ui64_t ui64_add (ui64_t x, ui64_t y, ui64_t *ov);
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extern ui64_t ui64_addn (ui64_t x, int y, int *ov);
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extern ui64_t ui64_sub (ui64_t x, ui64_t y, ui64_t *ov);
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extern ui64_t ui64_subn (ui64_t x, int y, int *ov);
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extern ui64_t ui64_mul (ui64_t x, ui64_t y, ui64_t *ov);
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extern ui64_t ui64_muln (ui64_t x, int y, int *ov);
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extern ui64_t ui64_div (ui64_t x, ui64_t y, ui64_t *ov);
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extern ui64_t ui64_divn (ui64_t x, int y, int *ov);
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/* bit operations */
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extern ui64_t ui64_and (ui64_t x, ui64_t y);
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extern ui64_t ui64_or (ui64_t x, ui64_t y);
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extern ui64_t ui64_xor (ui64_t x, ui64_t y);
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extern ui64_t ui64_not (ui64_t x);
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extern ui64_t ui64_rol (ui64_t x, int s, ui64_t *ov);
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extern ui64_t ui64_ror (ui64_t x, int s, ui64_t *ov);
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/* other operations */
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extern int ui64_len (ui64_t x);
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extern int ui64_cmp (ui64_t x, ui64_t y);
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#endif /* __UI64_H__ */
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